Window frame



June e, 1.933. C, CATLETT 1,913,067

` WINDOW FRAME `.Filed March 23, 1931 Patented .inne o, i933 i UNITED s-TATEs einer `CIHCAIELL)ES CTLETT, 0F STLAUNTON,v VIRGINIA winnow FRAME vApplcatima filed March 28, 1931.' Serial No. 524,742.

This invention relates to improvements in gested for ,preventing the draft `produced window frames, and particularly for the purthrough this opening' when the upper sash is pose oifisecuring ventilation. i lowered. The open space formed by the low- There have been attempts in the prior art eringcg of the upper sash is very objectionable,

5 to utilize for purposes of ventilation, the because observation and tests have shownt-hat open space formed between the upper and a very disagreeable down draft is produced lower sashes of a window when eitheror both in thismanner. v of such` sashes have been moved from their Among the objects of the present invention normally closed positions. In those cases is the production ofa window frame which j where upon movement of the` sashes, the top will permit the utilization of the space be- 50 of the lower sash is above the bottom of the tween the upper and lowei` sashes for ventilaupper sash, the entering' airis deflected and tion by supplying the desired upward and diffused without the Yformation of drafts. diiiused movements oi air through such Vhile the amount of air which passes through space, when the upper is lowered suffisuch an opening between the sashes depends Ciently for this purpose, a-nd at the same time 05 upon ythe difference' in pressure or tempel avoiding any objectionable opening at the y ture, or both between the outside and the intop of the window space which opening would side, aswell asupon other actors,tlie amount normally be formed by the lowering of the of fresh air which can be secured by such ven-` upper sash, wherel 'y no draft `is permitted r tilation where the space is continually left through suchpoint.V 70

open, is surprising large. In utilizing this Other objects and advantages will appear feature for ventilation, when the space befrom the more detailed description of this intween the sashes is provided by raisiifign the Vention as given below, but it will be underlower sash, there is a resulting1 disadvantage stood that this more detailed description is in that there isan open space between the botgiven by wayof illustration only and not by 75 tom of the lower sash andthe sill which pro- Way of limitation', since various changes in duces an objectionable draft. Similarly the the Structure may be made by those skilled desired veiitilatingspace between the s ashes H1 the art Without departing from the scope may also be provided by lowering the upper 21nd Spirit of. the present invention. sashybut also inthis instance, an objection- I 'U BOIlno/CtlOn With that more detailed deso able draft is produced from the space between CllptlOn 3S illustrated below, there is shown the upper portion of the upper sash and the Hl the Cll'ilWlHg, y g window frame. Elben this Ventilating space .In Flgulf 12R Yeltll SGCtlOIl thrOUgh 2L is provided by the raising of Jthe lower win- Window casing with the upper lower dow sash, the draithas been overcome by va- Soslflos 111 thou' normally olosodposltlonsrtho Y rious attachments to the bottomofthe frame molo?! omloodymg the Pro/Sont mvooton Eer lor of the lower sash. For example, as illusmlttmg the loWelllg of the oppor Sash Wlfh' trated in Figure 50i the drawing, onesuch out tho Podllotlol of a Cllf'loodomg means is the mere insertion of a piece of S193Go between the @Por Poton ofthe ,plo' board. In other instances of this character, Saso and the Wmo/gow from@ ofooollg 5 lo. y 00 the space at the bottom of the lower sash is i Flgmo 2: E Votoai Sootloo through @WMP left open anda deiieotoris suppliedgfor the doW from@ s lmlof to that Shown 1n Flguo purpose of diffusing the airfin an upward l: but Shoo/:log tho Ulolool" Wmdow Sash lo movgment, But While @hem means have man vlowered position to produce the desired venr suggested for preventing the ingress of a tlotiog opaco bow/'ooo the oppor and loYo' 9' currentof air producing a draft through" the SoShoS Wlthout lo'oduomg a. dmftfo'mlog space left by opening the lowerwindow sash, Slooo loo/@Woon to@ UPPo Portion ofthe u PPe' from the very nature of the opening` produced Sooo and the Window from@ of @35mg 3 lo by lowering the upper sash, no satisfactory Fgmo 3 a .fragmoltll 'Voltloal Sootlon attachments or arrangements have been sugijth'ouh aPolloIl of tho 1W-:low homo olf 10o casing, and the upper window sash showing a modification of the structure of Figure l; in

Figure 4, a fragmentary vertical section through a portion of a window frame and a portion of the lower window sash showing a guide stop modified to produce the strueture of the present invention at the bottom of the window casing.

It will thus be seen from the illustrative structures given in the drawing, that the present invention is accomplished by slight inexpensive modification in the frame itself, and without substantial change in appearance in such window frame, such change actually increasing and adding to the strength and rigidity of the normal window frame.

Window frames are all more or less generally of the same character, and the construction of such frames varies in but minor particulars. In all such structures, there are the usual upper and lower sashes which run between guide strips, and which sashes in closed position are seated between the guide strips that normally project from the bottom of the upper part of the frame as shown in the drawing. These guide strips may be an integral part of the frame, or they may be set in and in some manner attached to the window frame. As a general rule they do not usually project over half an inch from the bottom of the upper part of the frame. The outside guide strip is usually referred to as the blind stop, while the inner guide strip is usually referred to as the parting bead.

rIhe structure and objects of the present invention are desirably obtained by extension or enlargement of the blind stop and the parting bead, or either of them, so that they project for a distance sufficient to' permit the space to be formed between the two window sashes by lowering of the upper sash, the extended or enlarged blind stop and parting bead, or either of them, serving at the same time to prevent the production of any open space between the upper portion of the upper sash and the window frame or casing itself. In this evaluation of the blind stop and parting bead for the purposes of the presentinvention, the extensions or enlargements may be added to existing blind stops and parting beads on the ordinary window structure, but it is more desirable and is considered to be a preferred form of the invention to make the change as a permanent change in the frame of the window itself. The projection of the blind stop or parting bead, or bothv of them, for present purposes is carried far beyond what is ordinarily the case in the usual window frame at present employed. For this purpose both or either one of these guide members, but preferably the blind stop, is projected from the bottom ofthe upper part of the window frame a distance which is in excess of the vertical thickness of the upper wooden part of the lower sash. In order to permit as large an opening as possible, this projection should be in excess of the vertical thickness of the upper wooden part of the lower sash, plus the distance between the lower wooden part of the upper sash and the glass of the lower sash. In many window structures, Vas at presentutilized, as little as two inches of extension will accomplish the result desired, while it will be very rare indeed that a pro jection of more than three inches will be needed.

Turning to a consideration of structures made in accordance with the present invention, in Figure l, the window frame W carries the usual lower and upper sashes respectively L and U. In this structure, however, the blind stop l has been extended 0r proj ected downwardly for a substantial distance quite beyond that normally employed in the ordinary window frame structures. As noted above, these projected or extended blind stops are preferably made an integral part of the window frame structure, and become a permanent part thereof.

the same structure as that of Figure l, the upper sash U has been lowered a sufficient distance to provide the Ventilating space S between the lower portion of the upper sash U and the upper portion of the lower sash L. In this structure, although the uppen sash U has been lowered from its normal position shown in Figure l, no draft-producing space is formed at the upper portion of the window frame because of the extended or projected blind stop l. Consequently with the structures of Figures 1 and 2, the desiredventilating space S between the sashes is thus provided without producing a draftproducing opening at the top of the window frame.

As noted above, the extent to which the blind stop 1 is extended or projected may vary, but as noted this distance should at least be in excess of the vertical thickness of the upper wooden part of the lower sash, and desirably should also be in excess of the vertical thickness of the upper wooden part of the lower sash plus the distance between the wooden lower part of the upper sash and the glass of the lower sash, since in the latter instance, a maximum ventilation space between the sashes is thus provided.

As noted above, if desired, both an enlarged or extended blind stop and parting bead may be employed. In the fragmentary structure illustrated in Figure 3, the blind stop l and parting bead 2 has each been extended to cooperate with the upper sash U. This structure of Figure 3 will give results comparable with those of the structure of Figure 2, but it is preferred to utilize `only an extended blind stop as the more desirable form of the present invention.

. Referring now to Figure 2, which showsV `thickness of the center rail of said sash l In the modification shown in Figure 4, the

Vwindow frame W provided with thelower window sash Lhas the guide strip 3, which has been `extended or projected upwardly, as shown at 4. In such structure, the vventilating space S between the sashes may be provided by leaving the upper "sashrin place and raising the lower sash only. In this .stop and parting bead utilized at the top of thewindow frame, when the extended` guide event, the extendedV guide strip 4 will serve to close `any openingthat would otherwise be formed between thev lower portion oi' the lower sash L and the window frame or sill. As described above for the extended blind strip 4- is utilized as illustrated in Figure 4, the extent of `the projection utilized may similarly be determined in the same way that it is with the extended upperblind stops and parting beads, thatis the projection of the guide strip 4, as shown inFigure 4 of the `drawing,should be in excess of the thickness of the lower wooden membero the upper 2 window sash U, and preferably should be sash.

sash fora' distance greater than the vertical thickness of the center rail ofsaid sash, whereby the impervious upper railcoopery ates with the extended parting bead to prevent liow of air, although a flowfof air may take placeV between the center rails of the sash. i

3. In combination, a Window .frameand a i sash operable therein, said sash having an impervious top rail, said frame having a blind stop and a parting bead each extending vertically contiguously with the said impervious top rail of the said sash for a distance greater than the vertical thickness of the center rail of said/sash, Wherebythe im pervious upper rail cooperates with the extended blind stop and parting bead to prevent flow of air, although a I'low of air may place between the center rails of the,

take

CHARLES oATLnTT.

extended a further distance equal to the distance between the wooden upper part of the lower sash and the glass of the upper sash.

It will thus be seen that the present invention provides an inexpensive permanent modification of the window frame structure itself, allowing for ventilation, and at the `ent invention as illustrated in Figures 1 to 4 that are alreadyin use on may be employed, whereas in old structures where window frames, are already inplace, the extensions for the blind stops and parting beads may be attached to the guide strips such window frame structures. i

claim: i y

1. In combination, a window frame and a sash operable therein, said sash having an impervious top rail, said frame having a bind stop extending vertically contiguously with the said impervious top rail of the said sashfor a distance greater than the vertical whereby the impervious upper rail cooperates with the extended blind stop to prevent `flow of air, although a flow of air may take place between the center rails of the sash.

2. In combination,` a window frame and a sash operable therein, said sash having an impervioustop rail, said frame having a parting bead extending vertically contiguously with the sald impervious top rail of the said` Having thus set forthmy invention, I 

